Third place -- Data Skyscraper – Italian entrants Valeria Mercuri and Marco Merletti explain that modern data centers currently "consume a lot of energy" which requires them to be constantly cooled down in order to avoid overheating. This results in a large carbon footprint.

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Third place -- Data Skyscraper – Located in Iceland, the green "tower is conceived as a giant 3D motherboard," where overheating and energy consumption issues are reduced by the island's naturally cooler climate.

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Trans-Pital: Space Adaptive Skyscraper Hospital project – Chinese designers Chen Linag, Jia Tongyu, Sun Bo, Wang Qun, Zhang Kai and Choi Minhye proposed building a hospital that shifts and transforms according to the requirements of patients. "The idea of the hospital is that the patient does not have to move by himself -- the wards can move to where it should go to."

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Air-Stalagmite – The creation of American designers Changsoo Park and Sizhe Chen is designed for the world's most polluted cities. It houses a large vacuum on its lower floors, which sucks in polluted air and distributes it through cleaning filters on higher floors.

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Cloud Craft – American designers Michael Militello and Amar Shah were inspired by the droughts in California. Their creation fuses the process of cloud seeding -- a system by which we are able to purposely stimulate rain -- with architecture. "This architectural concept imagines a future earth where cloud seeding has become the standard process to modify and manipulate the weather."

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Return To Nature – This green structure by Nathakit Sae-Tan and Prapatsorn Sukkaset, from Thailand, is set in a future where humanity has to adapt to the power of mother nature to survive. "We design skyscrapers with nature as the main user and human as parasites of the planet, struggling to survive and camouflage, living towards the very end of the race."

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Re-Cover: Sustainable Skyscraper Enclosure – Soomin Kim and Seo-Hyun Oh, from South Korea, imagined an environmentally conscious make-over for New York's Empire State Building. This tower is wrapped in an environmentally friendly "skin" of pods and panels that create a greenhouse environment within the enclosure.

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The Valley Of Giants – These 1km tall multi-functional towers, by American designers Eric Randall Morris and Galo Canizares, can produce and collect water, as well as pollinate their surrounding landscape, turning the land into an oasis.